regrettably remove the animated button for download on homepage to improve...

regrettably remove the animated button for download on homepage to improve page performance in some browsers

docs/assets/css/docs.css

@@ -132,16 +132,6 @@ hr.soften {
 }
 
 /* Download button */
-@-webkit-keyframes downloadButton {
-  from { box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 5px rgba(0,0,0,.25), 0 2px 10px rgba(0,68,204,.5); }
-  50% {  box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 5px rgba(0,0,0,.25), 0 2px 25px rgba(0,68,204,.9); }
-  to {   box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 5px rgba(0,0,0,.25), 0 2px 10px rgba(0,68,204,.5); }
-}
-@-moz-keyframes downloadButton {
-  from { box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 5px rgba(0,0,0,.25), 0 2px 10px rgba(0,68,204,.5); }
-  50% {  box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 5px rgba(0,0,0,.25), 0 2px 25px rgba(0,68,204,.9); }
-  to {   box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 5px rgba(0,0,0,.25), 0 2px 10px rgba(0,68,204,.5); }
-}
 .masthead .btn {
   padding: 14px 24px;
   font-size: 24px;
@@ -151,19 +141,17 @@ hr.soften {
   -webkit-border-radius: 6px;
      -moz-border-radius: 6px;
           border-radius: 6px;
-  -webkit-box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 5px rgba(0,0,0,.25), 0 2px 10px rgba(0,68,204,.01);
-     -moz-box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 5px rgba(0,0,0,.25), 0 2px 10px rgba(0,68,204,.01);
-          box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 5px rgba(0,0,0,.25), 0 2px 10px rgba(0,68,204,.01);
-  -webkit-animation-name: downloadButton;
-     -moz-animation-name: downloadButton;
-  -webkit-animation-duration: 1.5s;
-     -moz-animation-duration: 1.5s;
-  -webkit-animation-iteration-count: infinite;
-     -moz-animation-iteration-count: infinite;
+  -webkit-box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 5px rgba(0,0,0,.25);
+     -moz-box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 5px rgba(0,0,0,.25);
+          box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 5px rgba(0,0,0,.25);
   -webkit-transition: none;
      -moz-transition: none;
           transition: none;
-
+}
+.masthead .btn:hover {
+  -webkit-box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 5px rgba(0,0,0,.25);
+     -moz-box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 5px rgba(0,0,0,.25);
+          box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 5px rgba(0,0,0,.25);
 }
 .masthead .btn:active {
   -webkit-box-shadow: inset 0 2px 4px rgba(0,0,0,.1), 0 1px 0 rgba(255,255,255,.1);